Sr. Developer - Application Development (Back-End)

CBTS; Tennessee; On-site; USD 90,000 - 120,000; Full time

Job summary

CBTS is seeking a seasoned Application Development (Back-End) professional to design and optimize secure, scalable backend systems. You will build robust APIs and microservices while integrating security considerations across enterprise-grade applications.

You will collaborate with cross-functional teams to ensure reliable, cloud-ready solutions and maintain high code quality and performance. Prior experience with Node.js and Java Spring Boot is preferred.

Qualifications

• Degree in Engineering, CS, Electronics, Telecommunications, or IT.
• 6–8 years of graduate experience.
• Guidewire Certified.

Responsibilities

• Develop and maintain server-side logic, APIs, and integration services for large-scale applications.
• Optimize application performance, scalability, and reliability through code quality and database tuning.
• Implement microservices architecture using modern frameworks (e.g., Node.js, Java Spring Boot).
• Integrate authentication, authorization, and data security mechanisms into application backbones.
• Collaborate with front-end, DevOps, and QA teams to deliver end-to-end, cloud-ready solutions.
• Troubleshoot production issues, perform root-cause analysis, and drive resolution improvements.

Skills

Node.js

Java Spring Boot

APIs

Security

Education

Engineering degree

Tools

Git

Cloud platforms

Job description

About this position

CBTS serves enterprise and midmarket clients in all industries across the United States and Canada. CBTS combines deep technical expertise with a full suite of flexible technology solutions--including Application Modernization, Managed Hybrid Cloud, Cybersecurity, Unified Communications, and Infrastructure solutions. From developing and deploying modern applications and the secure, scalable platforms on which they run, to managing, monitoring, and optimizing their operations, CBTS delivers comprehensive technology solutions for its clients' transformative business initiatives. For more information, please visit www.cbts.com .

OnX is a leading technology solution provider that serves businesses, healthcare organizations, and government agencies across Canada. OnX combines deep technical expertise with a full suite of flexible technology solutions—including Generative AI, Application Modernization, Managed Hybrid Cloud, Cybersecurity, Unified Communications, and Infrastructure solutions. From developing and deploying modern applications and the secure, scalable platforms on which they run, to managing, monitoring, and optimizing their operations, OnX delivers comprehensive technology solutions for its clients’ transformative business initiatives. For more information, please visit www.onx.com .

Job Code / ID: DEVAPPWBA0P2

Role Variant: Application Development (Back-End)

1. Role Purpose (1–3 lines): Performs the development and optimization of secure, scalable, and high-performance‑performance backend systems. Builds robust APIs, microservices, and integration components while driving engineering best practices and ensuring reliability across enterprise-grade applications.

2. Key Responsibilities:

• Develop and maintain server-side logic, APIs, and integration services for large-scale applications


• Optimize application performance, scalability, and reliability through code quality and database tuning.


• Implement microservices architecture using modern frameworks (e.g., Node.js, Java Spring Boot).


• Integrate authentication, authorization, and data security mechanisms into application backbones.


• Collaborate with front-end, DevOps, and QA teams to deliver end-to-end, cloud-ready solutions.


• Troubleshoot production issues, perform root-cause analysis, and drive resolution improvements.


• Focus on continuous learning and emerging trends.

3. Key Performance Indicators (KPIs):

• Code quality and test coverage metrics


• Application uptime and performance efficiency


• Defect density and resolution time


• API response time and throughput improvement


• Delivery timeliness and stakeholder satisfaction

4. Certifications: Guidewire Certified

2. Qualifications & Experience:

• Degree: Graduate / Professional Degree in Engineering, preferably in Computer Science, Electronics, Telecommunications, or Information Technology .


• Years of experience: Graduate – 6 to 8 years


• Relevant experience: 5+ years

3. Key Interfaces:

• Internal: Collaborates with Front-End, DevOps, Cloud Engineering, and QA teams for integration, testing, and deployment alignment. Works closely with Product Managers, Solution Architects, and Security teams to ensure architecture consistency and compliance with coding standards.


• External: Coordinates with client IT team, technology vendors, cloud service providers, and integration partners for performance optimization, issue resolution, and technology upgrades.